Silver

Idyllwild Water District

Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	7	ND
2015	ND	9	ND
2016	ND	8	ND
2017	ND	3	ND
2018	ND	6	ND
2019	ND	5	ND

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-06-19	4790-047-0830	ND
2014-07-17	4790-019-0815	ND
2014-07-23	4790-041-1055	ND
2014-09-03	4790-017-0900	ND
2014-09-24	4790-029-1110	ND
2014-09-24	4790-028-1100	ND
2014-09-24	4790-002-1130	ND
2015-04-16	4790-021-0730	ND
2015-09-23	4790-021-0915	ND
2015-10-22	4790-046-0830	ND
2015-10-22	4790-032-0815	ND
2015-10-29	4790-045-0930	ND
2015-10-29	4790-011-0915	ND
2015-10-29	4790-001-1000	ND
2015-12-23	4790-029-1105	ND
2015-12-23	4790-028-1100	ND
2016-05-25	4790-010-1045	ND
2016-05-25	4790-016-1055	ND
2016-06-23	4790-018-1010	ND
2016-06-23	4790-020-1100	ND
2016-06-23	4790-005-1115	ND
2016-07-21	4790-024-0845	ND
2016-07-28	4790-011-0840	ND
2016-07-28	4790-008-0855	ND
2017-04-07	4790-019-1045	ND
2017-04-07	4790-017-1025	ND
2017-11-30	4790-002-0930	ND
2018-04-19	4790-004-0940	ND
2018-04-26	4790-021-0950	ND
2018-04-26	4790-032-1015	ND
2018-05-22	4790-001-1400	ND
2018-05-23	4790-046-0900	ND
2018-08-10	4790-047-1045	ND
2019-10-30	4790-005-1020	ND
2019-10-30	4790-024-1035	ND
2019-10-30	4790-020-1100	ND
2019-10-30	4790-016-1130	ND
2019-10-30	4790-011-1120	ND